Nathaniel a



(No Model.)

N. A. BOY-NTON.

PLAT-B JOINT FOR STOVES 0R RANGES.

- Patented Mar.'2 1886.,

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WITNESSES:

ATTORNEYS.

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STATns NATHANIEL A. BOYNTON, OF NEW YORK, N. Y.

PLATE-JOINT FOR STOVES OR RANGES.

SPEGTLFICATION forming part o Letters Patent No. 337,127. dated March 2, 1886.

Application filed July 29, 1885. Serial No. 172,955. (No model.)

To all whom it may concern:

Beit known that I, NATHANIEL A. BOYN- TON, of the city, county, and State of New York, have invented certain new and useful Improvements in Plate-Joints for Stoves and Ranges, of which the following is a full, clear, and exact description.

This invention relates to the ovens and other parts of stoves and ranges in which wrought or sheet metal plates are combined with the cast-metal plates or frame portions of the stove or range to complete the wholestructure, and to form the necessary compartments and walls of the fines within the stove or range.

The invention more particularly relates to the joints made between these wrought or sheet iron and cast-metal plates, and to that description of such joint in which the sheet or wrought metal plates are bent along their margins to form angularprojections from their faces, and the cast-metal plates or parts are constructed with outer or marginal flanges and inner flanges or projections arranged to receive freely within or between said anges the angular bent marginal portions of the sheet or wrought metal plates. Such platejoint may not only be made fairly close, but all bolts or rivets may be dispensed with, and it not only has the advantage of cheapness, but admits of the stove or range being put together or taken apart much more expeditiously, and is generally simplerthantheplatejoints heretofore generally used in stoves and ranges. Said plate-joint for furnaces has before been used in combination with cement and segments screwed down to their places over the bent marginal portion of the plate or plates within the grooved portion formed by the inner and outer flanges ofthe adjacent part or parts. My invention not only dispenses with all such segments and fastenings, but it differs in the construction of the bent marginal portions of the plate or plates and their arrangement in relation with the flanged portion of the adjacent plates within which said bent flanges are received, the bent niarginal portions of the one set of plates not being bent, as heretofore7 at right angles to the plates, but so as to form an obtuse angle therewith, and so that when fitted to their places between the flanges of the adjacent parts the bent marginal portions of the sheet-metal plates will only bear on their outer edges against the inner faces of the adjacent parts or plates, thus leaving a clear angular space in thejoint for contraction and expansion of the plates, and for inserting cement when desired.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the igures.

Figure 1 represents a view in perspective of the oven portion, in part, of a stove or range embodying my invention; Fig. 2, a perspective view of one of the sheet-metal plates of the oven detached; and Fig. 8 a sectional View of one of the cast-metal plates or parts of the oven or frame of the stove or range, in part, showing also one of the sheet-metal plates, in part, in jointed connection therewith.

A A indicate two of the castmetal plates, in part, of the frame or exterior of the stove or range used in forming the oven.

Bis one of the side walls or plates of the oven, and B a bottom plate thereof, both of said plates, which are of wrought or sheet metal, connecting or being arranged between the cast-iron plates A A, and servingr that is, said plates B B'-as usual, to form the iiuewalls of the oven.

The cast-metal plates or partsA A are con=I structed with marginal anges b, extending along their inner faces, and with inner lianges, c, onV the same sides of the plates, and arranged parallel with and at a suitable distance from the marginal iianges b. These lastnamed tianges c may either be continuous, and, like the flanges b, extend throughout the whole 3 length or width of the plates, as shown in the drawings, or they may have their continuity broken at one or more points'throughouttheir length.

The sheet or wrought metal plates B B are fitted to their places and made to establish the desired joint with the plat-es A A by bending their marginal portions to form extended angular projections or flanges d, which are obtuse to the main bodies of theplates they form part of, and which are of suitable'size and area to freely enter within the channels or spaces formed by the ribs or flanges b c of the cast-metal plates. The obtxgise bend given to the anges'd of the wrought or sheet metal ICO plates, and the arrangement of said anges between the parallel ribs or flanges b c of the cast-metal plates, which are at right angles,

` or thereabout, to the surfaces they project In plate joints for stoves and ranges, as described, the combination, with the cast-metal plates provided with parallel ribs or angesb c, of the sheet 0r Wrought metal plates having their marginal portions or flanges d bent to form an obtuse angle with their bodies, and arranged to iit within the grooves formed by the ribs b o, so as to leave an angular space, e, 25 between said bent flanges d and the backs of said grooves, substantially as shown and described, and for the purpose herein set forth.

NATHANIEL A. BOYNTON.

Witnesses:

EDGAR TATE, WILLIAM A. MILLEG. 

